Event between (65489) Ceto and star TYC20350-00237-1 with event index number of 114859
Geocentric closest approach at 2018/04/15 12:51:50 UTC
J2000 position of star is 15:36:42.7 +01:00:20
Equinox of date position of star is 15:37:37.5 +00:56:50
Stellar brightness V=10.0,
use SENSEUP=2
Star is 145 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.3
TNO is 38.6 AU from the Sun
and 37.7 AU from the Earth.
The TNO is moving 22.8
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 102 seconds.
The 1-sigma cross-track error in the shadow position is
2026 km.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 13.9 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is CENTAURR
Star training set for 65489, (2018/04/15 12:52UT) Object RA Dec mag sep mel Arcturus 14:16:29.8 +19:05:17 0.0 26.92 153 Unukalhai 15:45:10.2 +06:22:09 2.6 5.74 142 10 Ser 15:29:33.8 +01:46:47 5.2 2.18 146 PPM 161731 15:36:44.6 +01:10:05 8.2 0.32 145 PPM 161739 15:37:14.3 +01:05:24 9.6 0.18 145 PPM 161750 15:37:38.6 +00:56:46 10.3 0.00 144 65489 15:37:38.6 +00:56:46 10.0 144 Positions are for equinox of date
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 65489, (2018/04/15 12:52UT) Object RA Dec mag sep mel Arcturus 14:15:38.3 +19:10:21 0.0 26.92 153 Unukalhai 15:44:16.3 +06:25:33 2.6 5.74 142 10 Ser 15:28:38.1 +01:50:31 5.2 2.18 146 PPM 161731 15:35:48.8 +01:13:40 8.2 0.32 145 PPM 161739 15:36:18.5 +01:08:58 9.6 0.18 145 PPM 161750 15:36:42.7 +01:00:20 10.3 0.00 144 65489 15:36:42.7 +01:00:20 10.0 144 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:26:26 UT
Marc W. Buie, Southwest Research Institute